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2-10 Introduction to RAID
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
totally dedicated to rebuilding the failed drive. The MegaRAID SCSI 320-
2 rebuild rate can be configured between 0% and 100%. At 0%, the
rebuild is only done if the system is not doing anything else. At 100%,
the rebuild has a higher priority than any other system activity.
2.3.12 Logical Drive States
Table 2.2 describes the logical drive states.
2.3.13 SCSI Drive States
A SCSI disk drive can be in one of the states described in Table 2.3.
Table 2.2 Logical Drive States
State Description
Optimal Drive operating condition is good. All configured drives are
online.
Degraded Drive operating condition is not optimal. A configured drive has
failed or is offline.
Failed Drive has failed.
Offline Drive is not available to MegaRAID SCSI 320-2.
Table 2.3 SCSI Drive States
State Description
Online
(ONLIN)
The drive is functioning normally and is a part of a configured
logical drive.
Ready
(READY)
The drive is functioning normally but is not part of a
configured logical drive and is not designated as a hot spare.
Hot Spare
(HOTSP)
The drive is powered up and ready for use as a spare in case
an online drive fails.
Fail (FAIL) A fault has occurred in the drive, placing it out of service.
Rebuild (REB) The drive is being rebuilt with data from a failed drive.